APPLICATION OF ELECTROMAGNETIC WAVE TOMOGRAPHY IN THE PROBING OF GOLD MINE

Electromagnetic well-logging with high frequency is a traditonal probing means. The drilling electromagnetic wave methods have added some new contents with the appearence of geotomography. The application of geotomography technology in the probing of quartz vein gold mine is discussed in this paper.
In the Scanning medium, because of the differences of some electromagnetic parameters (Such as dielectric constant, resistility, absorbing coeficient etc.), the obvious borders are-formed on the image of geotomography. Geotomography theoretically use the different absorbing coeficients of high frequenty electromagnetic waves in different medium, then calcu-late out the distribution of medium absorbing coeficients and Obtained the fine structure of underground medium. On the Computer screen, the image are the two-dimensions images of the electromagnetic wave absorbing coeficents distribution in the medium of observing plain.This test shows that geotomography not only can reflect gold ore veins and their wall rocks, but also even in the same medium of different system,so long as the design is reasonable, the much better effect can be obtained.
In this test, we have obtained some experience of using geotomography in tunnels and also laid a foundation for working in quartz rock veintype of gold mine in the future. New probing technology can reduce the work load of drilling and excavation. Geotomography technology provids us a new way for the probing of gold mine.